Context. Binary evolution can result in fast-rotating stars through accretion of angular
momentum during mass-transfer phases. These fast-rotating stars are predicted to be …

Young star clusters enable us to study the effects of stellar rotation on an ensemble of stars
of the same age and across a wide range in stellar mass and are therefore ideal targets for …

Rapid rotation is a fundamental characteristic of classical Be stars and a crucial property
allowing for the formation of their circumstellar disks. Past evolution in a mass and angular …

We use well–established observational evidence to draw conclusions about the
fundamental nature of the viscosity in accretion discs. To do this, we first summarise the …

Be X-ray binaries (BeXRBs) consist of rapidly rotating Be stars with neutron star (NS)
companions accreting from the circumstellar emission disc. We compare the observed …

ABSTRACT X-ray binaries (XRBs) are thought to regulate cosmic thermal and ionization
histories during the Epoch of Reionization and Cosmic Dawn (z∼ 5–30). Theoretical …

Context. Empirical evidence for the involvement of nonradial pulsations (NRPs) in the mass
loss from Be stars ranges from (i) a singular case (μ Cen) of repetitive mass ejections …

ABSTRACT NGC 2004# 115 is a recently identified black hole (BH) candidate in the Large
Magellanic Cloud (LMC) containing a B star orbiting an unseen companion in a 2.9 d orbit …

We use the three-dimensional Monte Carlo radiative transfer code hdust to model Be stars
where the disc is tilted from the equatorial plane of the star. We compute 128 models across …

TESS photometry is analyzed for 430 classical Be stars observed in the first year of the
mission. The often complex and diverse variability of each object in this sample is classified …